Answer 2.5

a) Give rough estimates of the time needed for the following events:

electron ionization: low femtosecond time scalebond vibration: low picosecond time scalebond cleavage: pico- to nanosecondsrearrangements: nano- to low microsecond time scaleresidence time in ion source: about one microsecondresidence time in mass analyzer: tens of microseconds

b) What is the difference between stable, unstable and metastable ions in mass spectrometry?

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